Reactive power compensation system and method thereof

1. A reactive power compensation system comprising: a detection unit configured to acquire loading state information of a plurality of loads; a reactive power compensation unit configured to compensate reactive power; and a controller configured to: determine whether a control mode of the system is a power factor compensation control mode or a flicker compensation control mode based on the loading state information; and control the reactive power compensation unit to selectively perform flicker compensation or power factor compensation according to the determined control mode.

2. The reactive power compensation system of claim 1 , further comprising a measurement unit configured to measure voltage data, current data, and a phase angle with respect to the loads.

3. The reactive power compensation system of claim 2 , wherein the controller generates a control signal according to the determined control mode to control the power factor compensation or the flicker compensation.

4. The reactive power compensation system of claim 3 , wherein the reactive power compensation unit comprises a Thyristor-switched capacitor, a Thyristor-controlled reactor, and a fixed capacitor, and one or more of the Thyristor-switched capacitor, the Thyristor-controlled reactor, and the fixed capacitor are operated according to the control signal.

5. The reactive power compensation system of claim 3 , wherein the controller acquires reactive power compensation amount information based on the voltage data, the current data, and the phase angle measured by the measurement unit, and generates a control signal including the reactive power compensation amount information.

6. The reactive power compensation system of claim 3 , wherein the controller provides the control signal to a Thyristor-switched capacitor to compensate a power factor when no flicker is generated even when the control mode is determined to be the flicker compensation control mode.

7. The reactive power compensation system of claim 1 , wherein the detection unit comprises a current sensor.

8. The reactive power compensation system of claim 1 , wherein the loading state information is acquired from current detected by each of the loads.

9. A method of compensating reactive power, the method comprising: acquiring loading state information with respect to a plurality of loads; determining whether a control mode of the system is a power factor compensation control mode or a flicker compensation control mode based on the loading state information; providing a control signal according to the determined control mode to a reactive power compensation unit to selectively perform flicker compensation or power factor compensation; and operating, in response to the control signal, one or more of a Thyristor-controlled reactor, a Thyristor-switched capacitor, and a fixed capacitor that are included in the reactive power compensation unit.

10. The method of claim 9 , further comprising measuring voltage data, current data, and a phase angle with respect to the loads.

11. The method of claim 10 , wherein the providing of the control signal to the reactive power compensation unit comprises: acquiring reactive power compensation amount information based on the measured voltage data, current data, and phase angle; generating a control signal including the acquired reactive power compensation amount information; and providing the generated control signal to the reactive power compensation unit.